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Acute toxicity evaluation of olive oil mill wastewaters: A comparative study of three aquatic organisms
Author(s) -
Paixão S. M.,
Mendonça E.,
Picado A.,
Anselmo A. M.
Publication year - 1999
Publication title -
environmental toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.813
H-Index - 77
eISSN - 1522-7278
pISSN - 1520-4081
DOI - 10.1002/(sici)1522-7278(199905)14:2<263::aid-tox7>3.0.co;2-d
Subject(s) - daphnia magna , photobacterium phosphoreum , bioassay , acute toxicity , effluent , ec50 , biology , toxicity , daphnia , ecotoxicology , ceriodaphnia dubia , environmental chemistry , toxicology , environmental science , zooplankton , chemistry , ecology , environmental engineering , organic chemistry , biochemistry , in vitro
Acute toxicity of olive mill wastewaters (traditional and continuous processes) collected from different regions of Portugal was evaluated using three test species ( Vibrio fischeri formerly Photobacterium phosphoreum, Thamnocephalus platyurus , and Daphnia magna ) and correlated with several physical and chemical parameters. Acute toxicity of these effluents, expressed in LC 50 or EC 50 , ranged from: 0.16 to 1.24% in Microtox test, 0.73 to 12.54% in Thamnotoxkit F test, and 1.08 to 6.83% in Daphnia test. These values reflect the high toxicity of the olive mill wastewaters to all test species. Statistical analysis of the results shows a high correlation between the two microcrustacean bioassays. Microtox test did not correlate significantly with the other bioassays used. A significative correlation ( p ≤0.05) could also be established between L(E)C 50 obtained in the microcrustacean tests and some physicochemical parameters of the effluent. ©1999 John Wiley & Sons, Inc. Environ Toxicol 14: 263–269, 1999